You can't get the nosewheel to turn over unless you have forward motion.
In the old days with tailwheel undercarriages, S58/S61, and also the S60 you will not twist the boom but you will scrub the tyres turning it without forward motion.
Some habits are hard to forget. I was taxiing past another helicopter in a crowded pan with a marshaller indicating more than an arms length between tips. I then turned right onto my loading point. In the ops room an incandescent pilot accused me of trying to stuff my tail rotor into his rotor disc. He was ex-Navy and had flown tailwheel helicopters beforehand so he assumed that all tailrotors hit bits of scenery on the outside of a tight turn.
Using a plan diagram of a 332 and dividers I proved to him that turning around the starboard mainwheel the tailrotor's sweep is inside the main rotors.